{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{llcccc}
\hline\hline
\multirow{2}{*}{Asset type} & Estimate & Std. Err. & Obs. & $R^{2}$ & Sample \\
                    \cline{2-6}
                    & (1) & (2) & (3) & (4) & (5) \\                    
\hline
    \\
\multicolumn{6}{l}{\textbf{Panel D: Federal Funds Futures}} \\
1-Month Ahead\( ^\dag\)&        0.03   &      (0.02)   &        1040   &        0.00   &   1995-2017   \\
2-Month/1-Month Slope\( ^\dag\)&        0.00   &      (0.01)   &        1040   &        0.00   &   1995-2017   \\
\hline\hline
    \end{tabular}
    }
    